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A rare cause of sudden cardiac arrest: Catecholaminergic polymorphic ventricular tachycardia.

Catecholaminergic polymorphic ventricular tachycardia is a rhythm disorder that develops due to genetic reasons in the absence of structural cardiac abnormalities. Ventricular tachycardia, ventricular fibrillation, cardiac arrest, and death may occur. Two-year-old patient presented to the Emergency Department with sudden cardiac arrest. He had syncope attacks after playing with his brother and he was followed up by the pediatric neurology and cardiology clinics. Cardiopulmonary resuscitation was performed, and he was then transferred to the Intensive Care Unit because of hypotension; dobutamin…

Evolution of late potential activity in the first six weeks after acute myocardial infarction.

The evolution of surface ventricular late potential activity was studied in 50 patients during the 6 weeks after first acute myocardial infa … sudden death occurred only in the 6 patients with late potential activity (p less than 0.05). Early ventricular fibrillation (15 patients) occurred equally in the patients with and without late potential activity. Thus, late potential activity occurs at some stage in the first 6 weeks after AMI in 50% of patients, but its timing is variable. It is a sensitive but not spec …

[Effect of motor activity on the development of arrhythmia in experimental emotional stress].

Studies on monkeys and rabbits have shown that the experimental emotional stress can produce various disorders of cardiac rhythm: sinus tach … adrenaline level in the myocardium and to the development of disorders of cardiac rhythm even up to ventricular fibrillation.

Intravenous flecainide acetate for the clinical management of paroxysmal tachycardias.

Intravenous flecainide acetate (2 mg/kg) was administered to 40 patients undergoing routine electrophysiological evaluation for the investigation of recurrent paroxysmal tachycardias. Ten patients had recurrent atrial flutter, 11 patients had recurrent atrial fibrillation, one of whom also had paroxysmal left atrial tachycardia, and 19 patients had recurrent ventricular tachyarrhythmias (17 with recurrent ventricular tachycardia and 2 with recurrent fascicular tachycardia). Flecainide was administered during tachycardia (over 5 to 10 minutes) to all patients with atrial flutter, to 10 patients

Sudden death in patients with chronic bifascicular block.

Prospective follow-up studies of 277 patients with chronic bifascicular block showed that 30 patients developed sudden cardiac death (SCD). … , cardiomegaly, left bundle-branch block, premature ventricular beats, and ventricular tachycardia. Ventricular fibrillation was the cause of death in four cases of SCD where terminal ECG documentation was available. We concluded that SCD is a major cause of mortality in patients with chronic bifascicular block. The association of SCD with coronary disease and ventricular …

Ventricular arrhythmias in syndrome of balloon deformity of mitral valve. Definition of possible high risk group.

Twenty patients clinically identified as having balloon deformity of the mitral valve were studied to assess the incidence of ventricular arrhythmias. Echocardiography and phonocardiography were used to confirm the nature of the mitral valve lesion. Continuous 24-hour electrocardiograms were obtained from all patients and analysed by a computer and 2 observers. One patient has ventricular fibrillation and 3 patients had ventricular tachycardia. There was a high incidence of other less severe forms of ventricular arrhythmias. Eight patients had inferolateral ST and T wave abnormality on the res…

Sex-Based Differences in Selected Cardiac Implantable Electronic Device Use: A 10-Year Statewide Patient Cohort.

Background Cardiac implantable electronic devices (CIEDs) include pacemakers, cardioverter defibrillators, and resynchronization therapy. This study aimed to assess CIED implantation and outcomes by sex and indication. Methods and Results This was a retrospective cohort study of adults with cardiovascular hospitalizations in New South Wales, Australia (2008 to 2018). CIED implantation in patients with arrhythmia, cardiomyopathy, and syncope were examined. Subcategories (complete heart block, atrial fibrillation/atrial flutter, ventricular tachycardia/ventricular fibrillation/cardiac arrest, si…

Initial Clinical Experience With a New Automated Antitachycardia Pacing Algorithm: Feasibility and Safety in an Ambulatory Patient Cohort.

BACKGROUND: Antitachycardia pacing (ATP) in implantable cardioverter-defibrillators (ICD) decreases patient shock burden but has recognized limitations. A new automated ATP (AATP) based on electrophysiological first principles was designed. The study objective was to assess the feasibility and safety of AATP in ambulatory ICD patients. METHODS AND RESULTS: Enrolled patients had dual chamber or cardiac resynchronization therapy ICDs, history of ≥1 ICD-treated ventricular tachycardias (VT)/ventricular fibrillation episode, or a recorded, sustained monomorphic VT. Detection was set to ventricula…

Полиморфный желудочковый тахикардия у пациента с герпесом энцефалитом.

Мы представляем пациента с полиморфным желудочно-сосудистым тахикардом и последующей фибрилляцией желудочков с приобретенным синдромом КТ, вторичным до герпеса энцефалитом.

Совпадение в аннотации оригинала
We present a patient with polymorphic ventricular tachycardia and subsequent ventricular fibrillation with acquired long QT syndrome secondary to herpes encephalitis.

[The antiarrhythmic effect of metoprolol (author's transl)].

The antiarrhythmic effect of metoprolol after chronic treatment has been evaluated by 24 hour Holter monitoring in 16 patients with several premature ventricular beats and in 14 patients with chronic atrial fibrillation and compared with the effect of a placebo. Metoprolol induced a mean decrease of heart rate of 14.5% in the 16 patients and reduced the mean value/min of the ventricular premature beats of the 51.2%. In addition the use of metoprolol abolished the ventricular premature beats in 9 cases, while in two cases there was an increase of their frequency. In the 14 patients with chronic

Association between air pollution and ventricular arrhythmias in high-risk patients (ARIA study): a multicentre longitudinal study.

BACKGROUND: Although the effects of air pollution on mortality have been clearly shown in many epidemiological and observational studies, th … 1 years) across nine centres in the Veneto region of Italy. Episodes of ventricular tachycardia and ventricular fibrillation that were recorded by the diagnostic device were considered in this analysis. Concentrations of particulate matter of less than 10 μm (PM10) and less than 2·5 μm (PM2·5) in aerodynamic diameter, carbon monoxide, nitrogen dioxide, sulphur dioxide, an …

Convergent procedure for long-standing persistent atrial fibrillation in heart failure with reduced ejection fraction.

BACKGROUND: Catheter ablation for atrial fibrillation in patients with heart failure with reduced ejection fraction is associated with a significant reduction in morbimortality. The convergent procedure is a valid ablation option for the treatment of long-standing persistent atrial fibrillation. AIM: To describe the outcomes of patients with heart failure with reduced ejection fraction and long-standing persistent atrial fibrillation who underwent the convergent procedure. METHODS: We studied consecutive patients included in two French centres between 2009 and 2020. Primary endpoint was free

Early repolarization and risk of lone atrial fibrillation.

INTRODUCTION: Early repolarization syndrome is a recently proposed condition characterized by an early repolarization pattern in the electrocardiogram (ECG) and ventricular fibrillation in the absence of structural heart abnormalities. Although some studies have suggested that early repolarization is associated with frequency of atrial fibrillation, the association of early repolarization with atrial fibrillation is not well known. HYPOTHESIS: Early repolarization indicates the substrate for atrial fibrillation in addition to that for ventricular fibrillation. METHOD: This study included 79 …

Cardiopulmonary resuscitation in children.

PURPOSE OF REVIEW: To summarize recent advances in pediatric cardiopulmonary arrest prevention, resuscitation and postresuscitation manageme … cant decreases in cardiac arrest incidence and overall pediatric hospital mortality. During arrest, ventricular fibrillation or ventricular tachycardia, once thought to be rare in children, occurs during 25% of inhospital pediatric cardiac arrests and at least 7% of out-of-hospital pediatric cardiac arrests. Survival to hospital discharge is much more likely after arrests …

Low cardiac frequency associated with higher number of extrasistoles in a computational model of Brugada Syndrome.

Brugada Syndrome is a form of idiopathic ventricular fibrillation, to date there is no definitive theory about how ventricular fibrillation is initiated or its substrate. Starting from the clinical observation that cardiac episodes are more frequent at rest, we developed a model in order to study the effect of cardiac frequency on reentrant activity. Our results suggest that the combination of arrhythmic substrate and cardiac frequency has a role in the insurgence of cardiac arrhythmia.

[The ECG is the key].

A 35-year-old man experienced respiratory agony while sleeping followed by a generalized seizure. Subsequent exclusively neurological diagnostics showed no pathological findings. Four months later, the patient suffered a sudden cardiac death due to ventricular fibrillation, which he survived without neurological deficit. After initially unremarkable diagnostics, the diagnosis could be made electrocardiographically. Following a special pharmacological therapy, the patient remained free from further episodes of ventricular fibrillation in the long-term follow-up.

Atrial fibrillation.

Although most cases of sustained atrial fibrillation are associated with mitral valve disease, hypertension, cardiac failure and atherosclerotic heart disease, some cases occur in the absence of any identifiable organic pathology. The consequences of atrial fibrillation include reduction in cardiac output, systemic emboli and an exaggerated ventricular response to exercise. In most clinical situations, digoxin is the drug of choice for controlling the ventricular response. Cardioversion should be undertaken in appropriately selected patients.

Successful risk stratification of a patient with ventricular preexcitation by improved transesophageal electrophysiological study.

The patient is a 19 years-old man who often wakes up in dreams with palpitations and fatigue. The ECG shows: 1. Sinus rhythm; 2. Preexcitation syndrome. Transesophageal electrophysiological study (TEEPS) diagnosis:High-risk accessory pathway. During radiofrequency catheter ablation, the patient suddenly developed atrial fibrillation and quickly converted to ventricular fibrillation. After defibrillation, ventricular fibrillation is transformed into sinus rhythm. Subsequently, the patient's high-risk accessory pathway was successfully ablated. Studies have shown that about 25% of patients with …

The Many ECG Faces of Wolff-Parkinson-White Syndrome.

BACKGROUND: Wolff-Parkinson-White (WPW) syndrome is rare and can predispose to tachyarrhythmias. This case illustrates the heterogeneous electrocardiographic (ECG) features of WPW syndrome. CASE SUMMARY: A 57-year-old woman was admitted with pneumonia and atrial fibrillation with rapid ventricular response (174 beats/min). Atrial fibrillation terminated after diltiazem infusion, and repeat ECG showed sinus rhythm with pre-excitation (delta waves and a short PR interval). Subsequently, she developed an irregular wide complex tachycardia consistent with atrial fibrillation with pre-excitation (

[Clinical effectiveness and potential hazards of combined kordaron and quinidine therapy of patients with atrial fibrillation].

Clinical efficacy of and potential risk for complications from combined cordarone+quinidine treatment were studied in 52 patients with atria … later ventricular tachycardia of the "pirouette" type arose that 2-3 minutes later was followed by ventricular fibrillation with clinical death. After effective electric defibrillation in the presence of lidocaine treatment ventricular fibrillation repeated 7 times. A total of 32 cardiac defibrillations were performed for 6 hours. The normalization of the Q-T interval wa …